House Extension Services

A thoughtfully designed extension can give you the additional space you need without the cost and disruption of moving home. J & K Developments undertakes domestic extension projects throughout the local area, helping homeowners create practical, attractive spaces that complement their existing properties.

We understand that many clients begin with an idea rather than a finished design. Our team can offer practical advice on layouts, materials, construction requirements and budgets, helping you make informed decisions before work begins.

Our House Extension Process

Every project is different, but a clear process helps keep the work organised and gives you greater visibility over important decisions, timings and costs.

1. Initial Consultation

   We discuss your property, objectives, preferred design, budget and any practical constraints.

2. Design and Planning

   The proposed design is developed and the relevant planning, structural and building-control requirements are identified.

3. Detailed Quotation

   We establish the agreed scope of work and provide a quotation based on the project information available.

4. Preparation

   Before construction begins, we agree access arrangements, working areas, key stages and communication throughout the project.

5. Construction

   Our team completes the building work while coordinating the different trades and required inspections.

6. Completion and Aftercare

   We review the completed work with you and remain available to provide support after practical completion.

How Much Does a House Extension Cost in Derby?

The cost of a house extension depends on its size, design, specification and the conditions at your property. A site visit and suitable project information are normally required before a reliable quotation can be prepared.

Factors that commonly affect the overall cost include:

• The size and number of storeys
• Ground conditions and foundation requirements
• Structural alterations and steelwork
• Access to the working area
• Drainage or utility alterations
• Windows, doors and roof design
• Kitchen, bathroom and interior specifications
• The level of decoration and finishing required

We recommend comparing quotations by scope and specification rather than price alone. Check what is included, what remains provisional and which responsibilities sit with the homeowner.

Planning Permission and Building Regulations

Some domestic extensions may fall within permitted development rights, while others require a planning application. The position depends on the proposed design, the property, previous alterations and any local restrictions.

Building Regulations are separate from planning permission and commonly apply to structural safety, foundations, insulation, drainage, fire safety and other technical aspects of an extension. Depending on the property and proposed work, you may also need structural calculations, a party-wall agreement or specialist surveys.

Our team can help you understand the construction information likely to be needed and work alongside your architect, structural engineer and building-control provider.

Planning and regulatory requirements vary by property and project. Seek project-specific professional advice before commencing work.

Why Choose J & K Developments?

J & K Developments is a family-run building company based in Littleover, Derby. We have completed domestic and commercial building projects throughout the region and aim to provide a personal service from the first conversation through to aftercare.

• Established Derby building contractor
• Family-run business
• Experience with traditional and contemporary properties
• Single-storey and two-storey extension expertise
• Practical advice on layouts, materials and budgets
• Coordination with construction professionals and suppliers
• Local project experience
• Ongoing support following completion

House Extension Projects Around Derby

Our portfolio includes extension work in Derby and surrounding locations such as Littleover, Mickleover, Allestree, Darley Abbey and Kirk Langley. Explore our completed projects to see examples of our workmanship.

Areas We Cover

Based in Littleover, J & K Developments builds house extensions throughout Derby, Derbyshire and selected parts of Nottinghamshire.

Areas covered include Derby, Littleover, Mickleover, Allestree, Darley Abbey, Chellaston, Oakwood, Belper, Duffield, Long Eaton and surrounding locations. Projects farther afield can be considered according to their scope and location.

If you are unsure whether we cover your area, call 01332 272006 or send us details of your proposed extension.